A very good initiative by you people Sir. I have few suggestions about mentioning few things in the video that would give the students a better and clear understanding. 1. For drawing the strike line, first make the dip of the pendulum zero. Then keeping the brunton completely lying on the plane, start rotating the brunton so that the spirit level of the Clinometer level ( capsule bubble) comes in the middle. Mark the line. Now orient the brunton side wise along this marked line and try to make it horizontal by bringing the spirit level of the bull's eye( tablet bubble) in the middle. Now note down the direction, this is the strike. ## Any horizontal line on an inclined plane is the strike line of that plane. And the direction of that line is the strike of that plane.
Very nice tutorial for measuring the attitude of the planar and linear structures. But before measuring the line. Please show the overview of bed. It will help to understand which side we have to measure. I have seen that many students used to measure the attitude from the wrong side whereas a bed looks like a book and we have to measure the upper or bottom sides the plane not on one of other 4 sides. Thereafter, apply the right hand thumb rule which represents the outline of the dip direction and strike. The thumb points the dip direction and other four finger point the strike direction. Measure the azimuth of the strike like from the north. Strike must be written in three digits. Then, measure the dip of the bed from the horizontal and it is measured along the vertical plane. Always remember which sides have the maximum inclination that would be the dip of the bed. But I always determine the dip firstly thereafter the strike. In the case of linear structure we measure the pitch, plunge, and trend. Trend is just like a strike but it represents the azimuth of vertical plane on the horizontal plane. The plunge is the angle between horizontal plane and the inclined line that is measured along the vertical plane. Pitch is the acute angle between the lineation and strike line. Strike line is the line of intersection of the imaginary horizontal plane and the inclined plane and it is measured horizontally.
Thanks a lot. After few months we will share another video about thorough concept of identifying suitable and correct planes for the measurement of strike, dip and pitch of lineation. But thanks a lot for expressing your views. Thank you.
I would like to ask regarding to the fault movement according to the pitch data. as in your video the field data shows this is a dip slip fault but how to represent the 'sense' of movement using the strike, dip, rake concention?? any help?
whether it is a thrust/reverse or normal fault... is it ok to write down: 146°/57°, 87° SW (if normal) or 146°,57°, 87 NE (for reverse fault)? i put quadrant code to refer the movement direction? which one is correct or is the quadrant shall be writen with respect to the strike plane?? in such way 146/57, 87 S (from dip according to your record)?
Not bad but please first make a video on using and explaining clinometer. Then show some characteristics of lineaments while describing the concepts. It should be followed by please making a video like this keeping in mind the reflections from surrounding on the dial of the clinometer.
Very easy way to learn of basic idea of strike dip concept.well done sir
Thank you and Salute boss
Thanks a lot
A very good initiative by you people Sir. I have few suggestions about mentioning few things in the video that would give the students a better and clear understanding.
1. For drawing the strike line, first make the dip of the pendulum zero. Then keeping the brunton completely lying on the plane, start rotating the brunton so that the spirit level of the Clinometer level ( capsule bubble) comes in the middle. Mark the line. Now orient the brunton side wise along this marked line and try to make it horizontal by bringing the spirit level of the bull's eye( tablet bubble) in the middle. Now note down the direction, this is the strike.
## Any horizontal line on an inclined plane is the strike line of that plane. And the direction of that line is the strike of that plane.
Thanks a lot sir 😊👍
Very nice tutorial for measuring the attitude of the planar and linear structures. But before measuring the line. Please show the overview of bed. It will help to understand which side we have to measure. I have seen that many students used to measure the attitude from the wrong side whereas a bed looks like a book and we have to measure the upper or bottom sides the plane not on one of other 4 sides. Thereafter, apply the right hand thumb rule which represents the outline of the dip direction and strike. The thumb points the dip direction and other four finger point the strike direction. Measure the azimuth of the strike like from the north. Strike must be written in three digits. Then, measure the dip of the bed from the horizontal and it is measured along the vertical plane. Always remember which sides have the maximum inclination that would be the dip of the bed. But I always determine the dip firstly thereafter the strike.
In the case of linear structure we measure the pitch, plunge, and trend.
Trend is just like a strike but it represents the azimuth of vertical plane on the horizontal plane. The plunge is the angle between horizontal plane and the inclined line that is measured along the vertical plane. Pitch is the acute angle between the lineation and strike line.
Strike line is the line of intersection of the imaginary horizontal plane and the inclined plane and it is measured horizontally.
Thanks a lot. After few months we will share another video about thorough concept of identifying suitable and correct planes for the measurement of strike, dip and pitch of lineation. But thanks a lot for expressing your views. Thank you.
This rock is massive...how can you measure on it
I would like to ask regarding to the fault movement according to the pitch data. as in your video the field data shows this is a dip slip fault but how to represent the 'sense' of movement using the strike, dip, rake concention?? any help?
whether it is a thrust/reverse or normal fault... is it ok to write down: 146°/57°, 87° SW (if normal) or 146°,57°, 87 NE (for reverse fault)? i put quadrant code to refer the movement direction? which one is correct or is the quadrant shall be writen with respect to the strike plane?? in such way 146/57, 87 S (from dip according to your record)?
Not bad but please first make a video on using and explaining clinometer. Then show some characteristics of lineaments while describing the concepts. It should be followed by please making a video like this keeping in mind the reflections from surrounding on the dial of the clinometer.
Looks closer to 81° than 51°